<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>Title</title>
</head>
<body>
   <script>
       'use strict'
       for (let i = 0; i < 100 ; i++) {
           console.log(i);
       }
       var jj = [1,5,4,7,2,8,4,9]
       jj.forEach(function (value) {
           console.log(value)
       })
   </script>
</body>
</html>